import React, { useState, useEffect, useRef } from 'react';
import { TextField, Box, Dialog, Button, DialogTitle, DialogContent, DialogContentText, DialogActions, MenuItem } from '@mui/material';
import Utils from '../../../utils/Utils';
import Select from '../../general/Select';
import NetPyNEField from '../../general/NetPyNEField';
import NetPyNETextField from '../../general/NetPyNETextField';

interface NetPyNESynapseProps {
  name: string;
  renameHandler?: (newName: string) => boolean;
  updateCards?: () => void;
  [key: string]: any;
}

/**
 * NetPyNESynapse Component
 * Placeholder implementation - full functionality to be migrated
 */
const NetPyNESynapse: React.FC<NetPyNESynapseProps> = ({
  name,
  renameHandler,
  updateCards,
  ...otherProps
}) => {
  const [currentName, setCurrentName] = useState(name);
  const [synMechMod, setSynMechMod] = useState<string>('Exp2Syn');
  const [errorMessage, setErrorMessage] = useState<string | undefined>(undefined);
  const [errorDetails, setErrorDetails] = useState<string | undefined>(undefined);
  const renamingRef = useRef(false);
  const updateTimerRef = useRef<NodeJS.Timeout | undefined>(undefined);
  const mountedRef = useRef(true);

  const synMechModOptions = [{ mod: 'Exp2Syn' }, { mod: 'ExpSyn' }];

  useEffect(() => {
    mountedRef.current = true;
    updateLayout();
    return () => {
      mountedRef.current = false;
    };
  }, []);

  useEffect(() => {
    if (currentName !== name) {
      setSyncMechModState(name);
      setCurrentName(name);
    }
  }, [name]);

  const setSyncMechModState = async (synapseName: string): Promise<void> => {
    try {
      const value = await Utils.execPythonMessage(
        `netpyne_geppetto.netParams.synMechParams['${synapseName}']['mod']`
      );
      if (mountedRef.current) {
        setSynMechMod(value || 'Exp2Syn');
      }
    } catch (error) {
      console.error('Error fetching synMechMod:', error);
    }
  };

  const updateLayout = (): void => {
    Utils.evalPythonMessage(
      `[value == netpyne_geppetto.netParams.synMechParams['${currentName}']['mod'] for value in ['ExpSyn', 'Exp2Syn']]`,
      []
    ).then((response: boolean[]) => {
      if (mountedRef.current) {
        if (response[0]) {
          setSynMechMod('ExpSyn');
        } else if (response[1]) {
          setSynMechMod('Exp2Syn');
        } else {
          setSynMechMod('Exp2Syn');
        }
      }
    });
  };

  const handleRenameChange = (event: React.ChangeEvent<HTMLInputElement>): void => {
    const storedValue = name;
    const newValue = Utils.nameValidation(event.target.value);
    
    if (renameHandler) {
      const updateCondition = renameHandler(newValue);
      const triggerCondition = Utils.handleUpdate(
        updateCondition,
        newValue,
        event.target.value,
        { 
          setState: (updater: any) => {
            if (typeof updater === 'function') {
              // Handle function updater if needed
            } else {
              setErrorMessage(updater.errorMessage);
              setErrorDetails(updater.errorDetails);
            }
          }
        },
        'Synapses'
      );

      if (triggerCondition) {
        triggerUpdate(() => {
          // Rename the synapse in Python
          Utils.renameKey(
            'netParams.synMechParams',
            storedValue,
            newValue,
            (response: any, newVal: string) => {
              renamingRef.current = false;
              if (updateCards) {
                updateCards();
              }
            }
          );
          renamingRef.current = true;
          updateLayout();
        });
      }
    }
  };

  const triggerUpdate = (updateMethod: () => void): void => {
    if (updateTimerRef.current !== undefined) {
      clearTimeout(updateTimerRef.current);
    }
    updateTimerRef.current = setTimeout(updateMethod, 1000);
  };

  const handleSynMechModChange = (event: any, child: React.ReactNode): void => {
    const value = event.target.value as string;
    Utils.execPythonMessage(
      `netpyne_geppetto.netParams.synMechParams['${currentName}']['mod'] = '${value}'`
    );
    setSynMechMod(value);
  };

  const dialogPop = errorMessage !== undefined ? (
    <Dialog open style={{ whiteSpace: 'pre-wrap' }}>
      <DialogTitle>{errorMessage}</DialogTitle>
      <DialogContent style={{ overflow: 'auto' }}>
        <DialogContentText>{errorDetails}</DialogContentText>
      </DialogContent>
      <DialogActions>
        <Button
          variant="contained"
          color="primary"
          onClick={() => {
            setErrorMessage(undefined);
            setErrorDetails(undefined);
          }}
        >
          BACK
        </Button>
      </DialogActions>
    </Dialog>
  ) : null;

  let content: React.ReactNode = null;
  if (synMechMod !== '' && synMechMod !== undefined) {
    content = (
      <div>
        <NetPyNEField id="netParams.synMechParams.tau1">
          <NetPyNETextField
            variant="filled"
            fullWidth
            model={`netParams.synMechParams['${name}']['tau1']`}
          />
        </NetPyNEField>

        {synMechMod === 'Exp2Syn' ? (
          <div>
            <NetPyNEField id="netParams.synMechParams.tau2">
              <NetPyNETextField
                fullWidth
                variant="filled"
                model={`netParams.synMechParams['${name}']['tau2']`}
              />
            </NetPyNEField>
          </div>
        ) : null}

        <NetPyNEField id="netParams.synMechParams.e">
          <NetPyNETextField
            variant="filled"
            fullWidth
            model={`netParams.synMechParams['${name}']['e']`}
          />
        </NetPyNEField>
      </div>
    );
  }

  return (
    <Box className="scrollbar scrollchild" mt={1}>
      <Box mb={1}>
        <TextField
          fullWidth
          variant="filled"
          onChange={handleRenameChange}
          value={currentName}
          disabled={renamingRef.current}
          label="The name of the synapse"
        />
      </Box>

      <NetPyNEField id="netParams.synMechParams.mod" mb={3}>
        <Select
          id="synapseModSelect"
          value={synMechMod}
          onChange={handleSynMechModChange}
          label="Synapse Model"
        >
          {synMechModOptions.map((option) => (
            <MenuItem key={option.mod} value={option.mod}>
              {option.mod}
            </MenuItem>
          ))}
        </Select>
      </NetPyNEField>
      {content}
      {dialogPop}
    </Box>
  );
};

export default NetPyNESynapse;

